Improvement in middlings-purifiers



1. MARTIN.. Middlings-Puriirers.

ii Al; N:

u n l 4- SSheetS--S-'heet Patented 0ct.2v7,1874.

Attorneys AUNITEIJ STATEs PATENT OEEIOEo n JAMEs R. MARTIN, OE HANOVER,OHIO.

IMPR-OVEMENVT IN MIDDLINGS-PURIFIERS.l

Specification forming part of Letters Patent No. 156,299, dated October27, 1874;,application filed August 8, 1874.

To all whom it may concern: Be it known that I, JAMES B. MARTIN, ofHanover, in the county of Licking and State of Ohio, have invented a newand valuable Improvement in llliddlings-Puriiier; and I do herebydeclare thatthevfollowing is a full, clear, and exact description of theconstruction and operation of the same, reference be` ing had to theannexed drawings making a part of this specification, and to the lettersand figures of reference marked thereon.

Figure l of the drawing is a representation of a longitudinal verticalsection of my middlings-purier. Fig. 2 is a transverse sectional view,and Fig. 3 is a detail sectional view. Fig. 4 is a horizontal sectionalview, and Fig.

. 5 is a detail sectional view.

This invention has relation to middlingsi puriers; and it'consists,mainly, in a novel arrangement of a series of riddles having cloths ofdifferent degrees of fineness, in combination with air-spoutsegulating-valves, and an indirect passage leading into a fan-case, whereby allof the o'al is carried oli' and discharged from the machine through themiddlings-duster, located beneath the said fancase and beneath ariddling-shoe. It also consists in the use of inclined traps in thedischarge-flue of the fan-case, for collecting the oEal, and dischargingit through a valve opening into a spout leading to the riddle-shoe overthe middlings-duster, whereby the machine is rendered dustless, and theoft'al is conducted to said middlings-duster to be retreated, andfinally discharged from the machine. It also consists in arranging theriddle of the shoe, which is beneath the fan-case, in such manner thatit will catch all of the oii'al which does not pass into the fan-case,and discharge this oil'al into the shoe, from whence it is conductedinto the duster; at the same time the fine flour which passes throughthe shoe-riddle will be conducted into a conveyor to be elevated anddischarged into the niiddlings-duster on top of the machine, as will behereinafter explained.

'The following is a ldescription of my im-j provements:

In the annexed drawings, A designates the chest, in which a series ofriddles are arranged, which chest is housed in at top, bottom, andsides, and mounted in a suitable frame. On

top ot" this chest, and arranged over the head of the highest riddle Tof the series of riddles, is a middlings duster and feeder, B', providedat one end with a feedhopper, B, and containing rotary brushes hand anendless screw-conveyer, l.- The brushes rotate inside of a cylindrical4wire bolting-cloth, t' i', which revolves around the brushes in an.opposite direction to their revolution, the rst part, t', of which clothis very fine, and allows only the line iiour to pass through it, whichiiour falls into a spout, C, through valve-openings c, and is conducteddirectly into a mixing-burr, D. The middlings are brushed through thecoarser cloth i', and evenly distributed upon the head of the riddle T.The conveyer l, which .is on a shaft, b', is rotated by means ofspur-wheel, (shown in IFig. 4,) and clears that portion of the dusterand feeder B which does not .extend over the riddle T. The brushfheads tare secured to oblique rods h', which rods are secured to a hub, h2,fast on a tube, h3. The tube h3 is centrally arranged with respect tothe brushes, and it contains a right-and-Iefthand screw, 7c, on whichnuts 701 are applied, and to these nuts collars 162702 are secured. Therods h1 are flexible, and they pass freely through the collars k2 k2, sothat, when the screw k is turned, the brushes will be extended towardthe boltingcloth or retracted. By these means the brushes can be nicelyadjusted to said cloth. The first riddle T of the series has a No. 8cloth, and the ne iiour which passes through it is received on a metalshoe, T1, and discharged, through an opening, s, into a vertical spout,C', which discharges into the mixing-burr D. The middlings pass over thetail of riddle T, and fall on a No. 6 riddle, T1, thence on a No. 7riddle, T2, thence on a No. l0 riddle, T3, thence-on a No. 8 riddle, T4,and thence on` a No. 8 riddle, T5. Whatever remains falls on an inclinedboard, T6, and is carried off'through apassage, s, and discharged intothe burr D. The middlings which pass through the riddles T2 and T4 arein like manner discharged into the mixing-burr D. Between the ends ofthe riddles furthest from a fan-case, I, are blast-pipes t, which areapplied to the end of case A, and provided with slide-valves t forregulating the iniiuX of air through said tubes. The air is inducedthrough the tubes t, between and through the riddles, and through aspace, G', by means of a fan, I2, in the case I, and the blasts are soregulated that all or nearly all of the oii'al will be separated fromthe middlin gs and fine our while being operated on by the riddles. Theriddles, the metal shoe T6, and a shoe, G, receive rapid reciprocatingmotion from a crank on a shaft, g, by means of aconnecting-rod, g'. Theair and offal enter the fan-case through indirect passages m m1, whichare provided with a regulating-valve, m2, at their highest points, andthese passages are so constructed and arranged that theair is drawndirectly upward from the space G' 5 then downward into the case I. Bythese meansan outward blast into the caseAis prevented. From thefan-easel the offal is directed upward in a trunk, I, in which inclinedtraps j are applied, which catch the offal, and conduct it through anopening, u, provided with a gravitatin g hinged valve, n', and dischargeit into a vertical spout, J, which delivers the oal into the shoe G uponan inclined metal shoe. From the shoe G the offal is discharged into ahopper, f, at one end of a middlings-duster, F. The shoe G is providedwith a riddle, p, beneath which is a double inclined imperforate bottom,p', which discharges the flour into a horizontal conveyer at the lowerend of an elevator, E, containing an endless band of carriers, c, whichelevator discharges the Hour into the duster and feeder B' again. Thematerial which is received upon the riddle p is that which falls downthrough the space G'. The riddle p is subjected to a blast of air, whichis drawn over it by the fan I2, as indicated by the course of the arrowsin Fig. 1. rIhe middlings-duster F is constructed like the duster andfeeder B', and separates the olfal from any good material which mayremain in it, the former passing olf through the spout r, regulated byslide-valves v, and the latter passing into the conveyer E to bedischarged back into the duster and feeder.

What I claim as new, and desire to secure by Letters Patent, is-

l. The combination of the series of riddles,

air-tubes t, slide-valve t', vertical passage G',

leading into fan-case I, the riddle and shoe p G, and themiddlings-duster F, all constructed and arranged to operatesubstantially in the manner as and for the purpose set forth.

2. In combination with the riddle T of the middlings duster and feederB', consisting of rotary brushes It, rotary screen A', and endlessscrew-conveyer l, operating substantially in the manner as and for thepurpose described.

3. The right-and-let-hand screw k, nuts k', and collars k2, incombination with the flexible rods h1, and brushes It, as and for thepurpose set forth,

4. In a middlings-purier, the fan-case I, having indirect curvedpassages m m1 and v valve m2, in combinationwith a series of riddles andvertical passage G', aus and for the purpose described.

5. The fan-case spout Il, having inclined traps j and opening n, incombination with the spout J, shoe G, and middlings-duster F,substantially as described.

6. In middlings-purifiers, the combination, with the duster F and shoeG, of the conveyers E e and duster and feeder B', combined and arrangedto operate in the manner substantially as described.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

J. B. MARTIN.

Witnesses:

GEORGE E. UPHAM, H. C. HoLLINGsHEAD.

